The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 15, 2022
Filed:
Jun. 20, 2019
Fujian Haixi Pharmaceuticals Co., Ltd, Fujian, CN;
Yan Feng, Fujian, CN;
Ruyong Wang, Fujian, CN;
Yizhang Ye, Fujian, CN;
Fengsen Zhang, Fujian, CN;
Xuan Gong, Fujian, CN;
Zhonghong Wang, Fujian, CN;
Xinshan Kang, Beijing, CN;
FUJIAN HAIXI PHARMACEUTICALS CO., LTD., Fujian, CN;
Abstract
The present application provides a compound in formula III, and further provides a use of the compound in the synthesis of a Brivaracetam intermediate and a crude drug, and a synthesis method. A raw material involved in the method of the present application is low in costs and easily available; (R)-4-propyl-dihydrofuran-2-ketone having high optical purity can be prepared; complicated separation and purification steps are avoided; costs are reduced, and the method is more applicable to industrial production.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile